Answer:
A
Step-by-step explanation:
I got y = 5 - 3x which is the same as y = -3 + 5
Answer:
135
Step-by-step explanation:
Well you don ‘t have to worry about the first part since its just the equation with the unknown number while the second part has it already substituted in.
Solve the equation normally, follow orders of operations.
6(5)^2-15
5^2=25
25*6=150
150-15=135
Answer:
(8/9)+4
First, we should have 8/9. Then add four to that for (8/9)+4
Answer:
a) 
b) 
c) Mary's score was 241.25.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

a) Find the z-score of John who scored 190



b) Find the z-score of Bill who scored 270



c) If Mary had a score of 1.25, what was Mary’s score?




Mary's score was 241.25.